The compact universal loading tray accommodates most traditional cases sold in the u.S.; however, it will not hold newer rounds such as the wsm, wssm, rem ultra mags and the 500 s&w mag.Each side is for different calibers.Capacity: 50rdType: Universal Loading TrayCaliber: Multi-CaliberSize: CompactQuantity: 1Weight: LightweightFunction: Holds CasesCompatible With: Most CalibersMaterial: PlasticIncludes: 1 TrayMedia Capacity: N/AFinish: GrayGrain: UniversalMedia Type: N/A